摘要
混凝土是一种非均质的多相复合材料,其破坏过程具有非常复杂的应力应变关系。利用离散元软件PFC3D,模拟混凝土试件三轴压缩破坏试验,分析了摩擦系数、孔隙率、平行粘结半径、平行粘结刚度、平行粘结强度等细观参数对混凝土试件峰值强度的影响,并对混凝土试件的破坏形式进行分析。
Concrete is a kind of heterogeneous multiphase composite, whose failure process has very complexed relationship between stress and strain. Using discrete element software PFC3D, a concrete specimen triaxial compression failure test model is established to analyze the influence of microscopic parameters on the peak strength of specimen,such as the friction coefficient, porosity, parallel bond radius, and the parallel bond strength and stiffness. An analysis of the failure mode of the concrete is also carried out.
出处
《石家庄铁道大学学报（自然科学版）》
2015年第2期88-91,共4页
Journal of Shijiazhuang Tiedao University(Natural Science Edition)
基金
河北省自然科学基金(E2013210104)
河北省人才工程培养经费资助科研项目(A201400213)
河北省高校百名创新人才支持计划(Ⅱ)
关键词
混凝土
离散元
细观参数
破坏形式
concrete
discrete element method
microscopic parameters
failure mode
